HFT C++ Core Systems Developer - 5-15 years experience

The role

This person will design, develop, and optimize low-latency, high-performance trading infrastructure in modern C/C++. The role focuses on building ultra-low-latency infrastructure, optimizing execution speed, and ensuring robust system reliability.

What you will do

• Design, develop, and optimize low-latency, high-performance trading infrastructure in modern C/C++ (latest standards)
• Implement efficient and scalable trading algorithms, order execution, and risk management systems
• Optimize CPU performance, memory management, and multi-threaded applications
• Collaborate with quant researchers, traders, and infrastructure engineers to improve system performance
• Profile, benchmark, and debug real-time systems to minimize latency and maximize throughput
• Maintain robust and fault-tolerant system components for continuous trading operations

Required qualifications

• Expert-level proficiency in C++ with a strong grasp of modern C++ features (C++17/20/23/26)
• Extensive experience in low-latency, high-performance systems programming
• Deep understanding of networking (TCP/UDP), concurrency, and multi-threading
• Strong experience in Linux-based development and performance tuning
• Experience with real-time, high-throughput systems where performance is critical
• Background in crypto or traditional finance trading systems
• Strong analytical skills
• Ability to work in high-pressure, real-time environments

Benefits

• Very competitive compensation, with strong upside based on contribution and performance
• Competitive holiday allowance
• Free daily Deliveroo lunch
• High-spec office and technology
• Team socials
• Global company offsites and development opportunities

About the company

Selini is a global trading firm focused on systematic trading and venture investing.